CC(C)C[C@H](NC(=O)c1ccc(N(=O)=O)cc1)C(=O)N2CCC[C@H]2C(=O)NCCCCNC(N)=[NH2+] RA4_H5555_1YPM 0.98 187.97 35 490.585 12 7 2 13 457.782